CVE-2026-58056 RustDesk - FileTransfer Session Authorization Scope Bypass
Attackers with file-transfer access can inject input and capture screens in RustDesk due to improper authorization scope checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-58056?
CVE-2026-58056 is a high-severity missing authorization vulnerability in RustDesk, published on 28 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
RustDesk gates incoming control messages on per-capability flags rather than on the session's authorized connection type, and a file-transfer session does not clear those flags. A peer holding only a valid FileTransfer authorization can inject keyboard and mouse input and reach the unguarded screenshot and display-capture handlers, acting outside its granted scope.
Weakness: CWE-863
Which versions are affected by CVE-2026-58056?
How do I fix CVE-2026-58056?
No fix has been published for CVE-2026-58056 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-58056 being exploited?
There is no known exploitation of CVE-2026-58056 in the wild and no public exploit code.
Sources
Also known as GHSA-vp3r-hwqm-x826.